简要介绍了认知无线电中基于能量检测的频谱感知方法,在分析能量检测法原理和性能基础上,研究了噪声的不确定性对检测性能的影响. 仿真表明,能量检测法是一种简单、有效的频谱感知方法.-A brief introduction of cognitive radio spectrum sensing based on energy detection method, the analysis and performance of energy detection principle, based on t

对不确定的进度栏的iOS，精选ios编程学习，很好的参考资料。-The uncertainty of the progress bar iOS, select the IOS programming learning, a good reference.

为解决信号检测过程中噪声不确定性的影响，以接收信号协方差矩阵为基础，提取其特征值作为检测统计量进行频谱感知(In order to solve the influence of noise uncertainty in the signal detection process, based on the covariance matrix of the received signal, the characteristic value is extracted as the detection